Process of making fertilizers.



UNITED STATES AUGUSTE VASSEUX,

PATENT OFFICE;

OF HAL, BELGIUM.

PROCESS OF-MAKING FERTILIZERS.

Specification of Letters Patent.

Patented Nov. 13, 1906.

Application filed ly 6, 1903. Serial No. 164.625.

To a l? uihoin it may concern;

Be it known that I, AUeUsTn VASSEUX, a

' subject of the King of the Belgians, residing at Hal, Belgium, have invented a Process of Treating Low Wines from Distilleries, of which the following is a specification.

The by-products derived fronr the treatment of sugar-beets, grain, and similar vegetable substances in the process of refining and distilling contain certain mineral salts and also a large quantity of organic nitrogen,

* which latter substance, highly valuable as a rator.

fertilizer, has heretofore been lost during the process employed for the recovery of the salts.

My invention may be said to consist in a,

process by reason of which such mineral salts areseparated and both of these substances made available as fertilizers.

T o carry my process into effect, I proceed as followsa The fluid by-products, however derived, are first concentrated in an evapo- Such concentrate will be found to have approximately the following composition in one hundred parts: water,'22.20;'

ashes, 27.00; organic material, 50.80; and the twenty-seven parts of ashes in one hundred parts; potassium carbonate, (K2003) 39.19; sodium carbonate, (Na2CO 14.02; potassium chlorid, (KC1,) 8.46;'potassium sulfate, (K 504) 20.57; insoluble material, 13.98; water, 3.00; undetermined, .78. To one hundred grams of-the concentratehaving the properties stated there is then added eleven grams of sulfuric acid, which sulfuric acid converts the otassium and sodium car-' bonates of the ash into potassium sulfate and sodium sulfate.

In the practical operation of my rocess I obtain from one thousand kilos of y-products, (treacle,) 348.60 kilos of concentrate of the composition stated. This contains 94.12

. kilos of ashes, containing 36.88 kilos of potassium carbonate, requiring 26.18 kilos of sulfuric acid to form potassium sulfate, 13.19 kilos of sodium carbonate re uiring 12.19 kilos of sulfuric acid toform so umsulfate, (Na SOQ After the addition of the sulfuric acid the solution is allowed. to stand for a sufficient time to permit crystallization of the potassium sulfate, after which the solution is introduced into a centrifugal'machine and I spun to separate the crystallized potassium sulfate from the solution. From one hun-- jecting by-products such as described, to the action of a chemical agent which will convert the metallic salts into a crystallizable body without destroying the organic nitro en resent, then se arating such crystalliza le body from the so ution.

2. The process of converting by-products such as described, into a fertilizer containing organic nitrogen, which consists in se arat- 1n tid n of sulfuric acid and crystallization, the inaj or portion ofthe metallic salts contained in such by-products.

'3. The process of separating the metallic salts and organic nitrogen byroducts such as described, which consists'in first concentrating the by-products, then subjecting them to the action of sulfuric acid, then crystallizing the potassium sulfate, then separating the ma or portion of the potassium-sulfate crystals from the liquid portion of the solution containing the organic nitroen. P

4. A ste in the process of separating the metallic sa ts and organic nitrogen contained from such by-products, through t e acin by-products such as described, which consists in introducing into such by-products sufficient sulfuric acid to convert the contained metallic salts into potassium sulfate. 1, AUGUSTE VASSEUX.

in presence of O. ScHERF,

J. 'P. WILLIAMS. 

